The fonds consists of the following series: biographical material, personal correspondence (1912-1968), addresses (1914-1961), clippings both by and about Eastman (1912-1955), copies of published articles (1909-1957), lecture notes and research material, records relating to the Canadian Institute of International Affairs (1950-1962) and the United Nations Association of Canada (1952-1968), pamphlets/published material and photographs.